Adding pareto functionality to fig2plotly

[gilbertogalvis]

This PR add pareto functionality to fig2plotly library. Previously pareto matlab function was not implemented in fig2plotly.

This PR was tested for all cases in https://github.com/plotly/ssim_baselines/tree/main/matlab/code-examples/discrete-data-plots/pareto and work perfectly for all cases.

Please test all cases there. Here I attach one example case

codelines = [200 120 555 608 1024 101 57 687];
coders = {'Fred','Ginger','Norman','Max','Julia','Wally','Heidi','Pat'};

figure
pareto(codelines, coders)
title('Lines of Code by Programmer');

f = fig2plotly(gcf, 'offline', 0);

Attach bellow screenshots of results

links to Chart-Studio:

https://chart-studio.plotly.com/~galvisgilberto/4132/#/
https://chart-studio.plotly.com/~galvisgilberto/4134/lines-of-code-by-programmer/#/
https://chart-studio.plotly.com/~galvisgilberto/4136/#/

NOTA
It is worth noting that, for this PR, an important change in the extractAxisData.m file was introduced, which optimally and automatically sets the ticklabels in the axes. Please check that file for more details on lines 235 to 291